<template>
    <div
        v-if="isExternal"
        :style="styleExternalIcon"
        class="svg-external-icon svg-icon"
        v-on="$listeners"
    />

    <svg v-else :class="svgClass" aria-hidden="true" v-on="$listeners">
        <use :xlink:href="iconName" />
    </svg>
</template>

<script>
    import { isExternal } from "@/utils/lib";

    export default {
        name: "SvgIcon",

        props: {
            iconClass: {
                type: String,
                required: true,
            },

            className: {
                type: String,
                default: "",
            },
        },

        computed: {
            isExternal() {
                return isExternal(this.iconClass)
            },

            iconName() {
                return `#icon-${this.iconClass}`
            },
            
            svgClass() {
                if (this.className) {
                    return 'svg-icon ' + this.className
                } else {
                    return 'svg-icon'
                }
            },

            styleExternalIcon() {
                return {
                    mask: `url(${this.iconClass}) no-repeat 50% 50%`,
                    "-webkit-mask": `url(${this.iconClass}) no-repeat 50% 50%`,
                };
            },
        },
    }
</script>

<style scoped>
    .svg-icon {
        width: 1em;
        height: 1em;
        vertical-align: -0.15em;
        fill: currentColor;
        overflow: hidden;
    }

    .svg-external-icon {
        background-color: currentColor;
        mask-size: cover !important;
        display: inline-block;
    }
</style>
